Field Controls CK-61 - Adjustments; Pressure Switch Adjustments; Post Purge Timing Adjustment

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ADJUSTMENTS
PRESSURE SWITCH ADJUSTMENTS
With the venter air  ow set and the appliance operating
at the best operating e ciency, adjust the pressure
switch by rotating the adjustment screw clockwise until
the burner shuts o , then rotate the adjustment screw
counterclockwise until the burner  res. Rotate the
adjustment screw an additional
1
⁄4 turn counterclockwise
to ensure proper switch setting.
(See Figure 6)
POST PURGE TIMING ADJUSTMENT
To adjust the post purge time, refer to
Figures 7 & 8.
For timer that looks like Figure 7: Rotate the timer
adjustment on the timer clockwise to increase the
operation time. To decrease the operation time,
rotate the timer adjustment counterclockwise.
For timer that looks like Figure 8: Rotate the
timer adjustment on the timer counterclockwise
to increase the operation time. To decrease
the operation time, rotate the timer adjustment
clockwise.
*Typical post purge time should be between 3 to
5 min.
Figure 6
Figure 7
Figure 8